The APOE alleles are important in understanding your Alzheimer’s risk, and the data is found in your 23andMe raw data file (if you want to know).
APOE is involved in carrying cholesterol and other fats in your bloodstream, and a common variant of the gene is strongly linked to a higher risk of Alzheimer’s.[ref]
Alzheimer’s risk is influenced by both genetics and environmental factors. Genes are only one part of the equation for Alzheimer’s.
Knowing your risk can help you prioritize lifestyle changes for the prevention of Alzheimer’s disease. Clinical trials and high-quality studies show that there are many options to help prevent Alzheimer’s.